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Message-ID: <202404152338.axJTOvpQ-lkp@intel.com>
Date: Tue, 16 Apr 2024 00:13:14 +0800
From: kernel test robot <lkp@...el.com>
To: Cristian Marussi <cristian.marussi@....com>,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
devicetree@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
sudeep.holla@....com, cristian.marussi@....com,
jassisinghbrar@...il.com, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
jonathan.cameron@...wei.com
Subject: Re: [PATCH v4 2/2] mailbox: arm_mhuv3: Add driver
Hi Cristian,
kernel test robot noticed the following build warnings:
[auto build test WARNING on robh/for-next]
[also build test WARNING on soc/for-next linus/master v6.9-rc4 next-20240415]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Cristian-Marussi/dt-bindings-mailbox-arm-mhuv3-Add-bindings/20240415-094106
base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link: https://lore.kernel.org/r/20240412192801.554464-3-cristian.marussi%40arm.com
patch subject: [PATCH v4 2/2] mailbox: arm_mhuv3: Add driver
config: hexagon-allyesconfig (https://download.01.org/0day-ci/archive/20240415/202404152338.axJTOvpQ-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 8b3b4a92adee40483c27f26c478a384cd69c6f05)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240415/202404152338.axJTOvpQ-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202404152338.axJTOvpQ-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/mailbox/arm_mhuv3.c:15:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
547 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from drivers/mailbox/arm_mhuv3.c:15:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from drivers/mailbox/arm_mhuv3.c:15:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
584 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
>> drivers/mailbox/arm_mhuv3.c:374:2: warning: result of comparison of constant 18446744073709551615 with expression of type 'typeof (_Generic((_bmask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (_bmask)))' (aka 'unsigned long') is always false [-Wtautological-constant-out-of-range-compare]
374 | writel_relaxed_bitmask(0x1, &mhu->pbx->dbcw[priv->ch_idx].int_en, tfr_ack);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/mailbox/arm_mhuv3.c:219:12: note: expanded from macro 'writel_relaxed_bitmask'
219 | _rval |= FIELD_PREP(_bmask, _value); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:115:3: note: expanded from macro 'FIELD_PREP'
115 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:72:53: note: expanded from macro '__BF_FIELD_CHECK'
72 | BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
73 | __bf_cast_unsigned(_reg, ~0ull), \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
74 | _pfx "type of reg too small for mask"); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:449:22: note: expanded from macro 'compiletime_assert'
449 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:437:23: note: expanded from macro '_compiletime_assert'
437 | __compiletime_assert(condition, msg, prefix, suffix)
| ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:429:9: note: expanded from macro '__compiletime_assert'
429 | if (!(condition)) \
| ^~~~~~~~~
drivers/mailbox/arm_mhuv3.c:384:2: warning: result of comparison of constant 18446744073709551615 with expression of type 'typeof (_Generic((_bmask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (_bmask)))' (aka 'unsigned long') is always false [-Wtautological-constant-out-of-range-compare]
384 | writel_relaxed_bitmask(0x0, &mhu->pbx->dbcw[priv->ch_idx].int_en, tfr_ack);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/mailbox/arm_mhuv3.c:219:12: note: expanded from macro 'writel_relaxed_bitmask'
219 | _rval |= FIELD_PREP(_bmask, _value); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:115:3: note: expanded from macro 'FIELD_PREP'
115 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:72:53: note: expanded from macro '__BF_FIELD_CHECK'
72 | BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
73 | __bf_cast_unsigned(_reg, ~0ull), \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
74 | _pfx "type of reg too small for mask"); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:449:22: note: expanded from macro 'compiletime_assert'
449 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:437:23: note: expanded from macro '_compiletime_assert'
437 | __compiletime_assert(condition, msg, prefix, suffix)
| ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:429:9: note: expanded from macro '__compiletime_assert'
429 | if (!(condition)) \
| ^~~~~~~~~
drivers/mailbox/arm_mhuv3.c:387:2: warning: result of comparison of constant 18446744073709551615 with expression of type 'typeof (_Generic((_bmask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (_bmask)))' (aka 'unsigned long') is always false [-Wtautological-constant-out-of-range-compare]
387 | writel_relaxed_bitmask(0x1, &mhu->pbx->dbcw[priv->ch_idx].int_clr, tfr_ack);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/mailbox/arm_mhuv3.c:219:12: note: expanded from macro 'writel_relaxed_bitmask'
219 | _rval |= FIELD_PREP(_bmask, _value); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:115:3: note: expanded from macro 'FIELD_PREP'
115 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:72:53: note: expanded from macro '__BF_FIELD_CHECK'
72 | BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
73 | __bf_cast_unsigned(_reg, ~0ull), \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
74 | _pfx "type of reg too small for mask"); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:449:22: note: expanded from macro 'compiletime_assert'
449 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:437:23: note: expanded from macro '_compiletime_assert'
437 | __compiletime_assert(condition, msg, prefix, suffix)
| ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:429:9: note: expanded from macro '__compiletime_assert'
429 | if (!(condition)) \
| ^~~~~~~~~
drivers/mailbox/arm_mhuv3.c:579:4: warning: result of comparison of constant 18446744073709551615 with expression of type 'typeof (_Generic((_bmask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (_bmask)))' (aka 'unsigned long') is always false [-Wtautological-constant-out-of-range-compare]
579 | writel_relaxed_bitmask(0x1, &dbcw[i].int_clr, tfr_ack);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/mailbox/arm_mhuv3.c:219:12: note: expanded from macro 'writel_relaxed_bitmask'
219 | _rval |= FIELD_PREP(_bmask, _value); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:115:3: note: expanded from macro 'FIELD_PREP'
115 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:72:53: note: expanded from macro '__BF_FIELD_CHECK'
72 | BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
73 | __bf_cast_unsigned(_reg, ~0ull), \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
74 | _pfx "type of reg too small for mask"); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:449:22: note: expanded from macro 'compiletime_assert'
449 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:437:23: note: expanded from macro '_compiletime_assert'
437 | __compiletime_assert(condition, msg, prefix, suffix)
| ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +374 drivers/mailbox/arm_mhuv3.c
368
369 static void mhuv3_doorbell_tx_startup(struct mhuv3 *mhu, struct mbox_chan *chan)
370 {
371 struct mhuv3_mbox_chan_priv *priv = chan->con_priv;
372
373 /* Enable Transfer Acknowledgment events */
> 374 writel_relaxed_bitmask(0x1, &mhu->pbx->dbcw[priv->ch_idx].int_en, tfr_ack);
375 }
376
--
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